Concentration, impaired

At low concentrations, fatigue in healthy people and chest pain in people with heart disease. At higher concentrations, impaired vision and coordination headaches dizziness nausea. Fatal at very high concentrations. 

Based on effects caused in monkeys and rats, the following are expected in humans 20,000 ppm for 60 minutes, coma and possibly death 10,000 ppm for 30 minutes, marked incoordination 2000ppm for 5 minutes, disturbance of equilibrium. Human subjects exposed to 900-1000ppm for 20 minutes experienced light-headedness, incoordination, and impaired equilibrium transient eye irritation has also been reported at similar concentrations. Impairments in psychomotor task performance such as reaction time, perceptual speed, and manual dexterity have been demonstrated at levels around 350ppm. Other studies at similar exposure levels have failed to show any impairment, but the type of task chosen to test behavioral effects and the times at which behavioral measures were sampled during the course of exposure may explain the variations from study to study." ... 

Tablet combination therapy Adverse reactions occurring in at least 3% of patients include the following Abdominal pain alopecia anemia anorexia anxiety arthralgia back pain bacterial infection blurred vision concentration impairment cough depression dermatitis diarrhea dizziness dry mouth/skin dyspepsia dyspnea eczema fatigue/asthenia headache hypothyroidism increased sweating injection site reaction insomnia irhtability/anxiety/nervousness lymphopenia memory impairment mood alteration myalgia nausea neutropenia pain pruritus pyrexia rash resistance mechanism disorders rigors thrombocytopenia vomiting weight decrease.

Adverse events occurring in at least 3% of patients include dizziness, fatigue, headache, concentration impaired, insomnia, abnormal dreams, somnolence, depression, anxiety, pruritus, nervousness, rash, nausea, vomiting, diarrhea, dyspepsia, abdominal pain. 

Attention, concentration Impairment at higher (therapeutic) doses No effect... 

Mentation - concentration impaired Mentation - confabulation Mentation - confused Mentation - crying, purposeless Mentation - disrobing Mentation - hallucinations Mentation - illusions Mentation - judgement impaired Mentation - memory impaired (amnesia)... 

Mentation - concentration impaired Mentation - confused Mentation - judgement impaired Mentation - memory impaired (amnesia)... 

Surfactants mnst be chosen with dne care, as their strong interfacial activity can elicit adverse reactions in biological systems. Cell membrane constituents (phospholipids, cholesterol, etc.) can be solubilized at supermicellar concentrations, impairing the integrity of membranes. This disruption of the membrane enhances the permeability of drng substances and other snbstances present in the extracellular fluid. At low concentrations such alterations are reversible and membranes recover rapidly, but higher concentrations... 

Tian R, Nascimben L, Ingwall JS, Lorell BH. Failure to maintain a low ADP concentration impairs diastolic function in hypertrophied rat hearts. Circulation 1997 96 1313-1319. 

HUMAN HEALTH RISKS Inhalation human TCLo 96 ppm for 7 hours EPA Group B2/C probable human carcinogen Acute Risks irritation of eyes, upper respiratory tract and skin flushing of face and neck dizziness headache CNS effects anesthetic effects coordination impairment kidney dysfunction death Chronic Effects memory and concentration impairment cardiac arrhythmia menstrual disorders spontaneous abortions kidney effects tumors. 

In order to compensate for partial decomposition of water because of overcharge and corrosion, water must be regularly added. Normally addition of acid or alkali solutions is inadmissible as the resulting increase in electrolyte concentration impairs battery characteristics. Only deionized water (if unavoidable, pure rainwater or melted snow may be acceptable) is to be added to the electrolyte. This water must not be kept in metal containers as even very small amounts of iron ions (or ions of other metals) introduced into the electrolyte are very harmful to batteries. Chloride ions present in normal tap water are also very dangerous. It should be kept in mind that boiling of water does not remove either chloride or iron ions. When water is added, the electrolyte must come to the level indicated in the manual for each specific battery (usually it is 3-5 mm above the upper edges of the plates). A certain time is required for the concentration to level off in the bulk of the electrolyte. 

Type 2 OSN A more severe and chronic form than Type 1 in which many of the symptoms and cognitive impairments are thought to be irreversible when the worker is removed from the solvent environment. It is also known as mild toxie encephalopathy. Type 2 has been divided further into two sub-types based on psychological symptoms (Type 2A) and cognitive impairments (Type 2B). Type 2A sufferers have a range of symptoms which may include sustained personality and mood disturbances, fatigue, poor impulse control and poor motivation. Type 2B symptoms include poor concentration, impairments of new verbal and visual... 

The psychological symptoms of stress are disturbed concentration, impaired memory, impaired decision making, tension and aggression, sleep disturbance, and, in severe cases, mood change. 

Occupational hygiene deals not only with overt threats to health but also in a positive sense with the achievement of optimal comfort conditions for workers, i.e. the reduction of discomfort factors which may cause irritation, loss of concentration, impaired work efficiency and general decreased quality of life. 

Weakness and paresthesia in all four extremities Difficulty concentrating Impaired memory. 

---